Onoff

Yeah I might hold off on the sauce 'till a bit later!

I'm looking at it realising why people duck when they get out of helicopters! @daiking, sounds like you've experience of this. Other than it smelling like a cheap Chinese air rifle what's the score with it? I'm thinking it might be worth sticking a temporary timber batten up between the joists to keep the pilot drill on centre.

The very same. Looks lethal!

The library is going to be a whole new chapter...

Yay! In the cold, sober light of day I'm bang on perpendicular to the rear wall! TF for optical delusions! Moral, drink more! I now need to cut an accurate 180mm dia hole in the ceiling but DON'T want to spend £30 odd on a tool with a dust cowl so off to T'station for their <£10 version.

You gonna throw sum shapes?

On a Victorian place of that age (I own a couple of 1860's terraces) there should really be visible air vents front and rear so you get cross ventilation to keep under the floor damp free I wonder if the "1920/yellow brick" add on at the back has interrupted this? The leaky flat roof won't help. At the moment due to various issues I'm in the "sentiment is overrated" camp btw!

Have you got suspended wooden floors downstairs? Well worth looking to see if the airbricks have been covered over /compromised. Also if you've had some dodgy extension on there in the past it might have interrupted the "by design" airflow under the house and left it inadequately ventilated. Are you in a position to do it up to a minimum, saleable standard and then flog it to some mug who likes a challenge? Put the money towards a low energy self build. I appreciate the sentimental attachment. Our place the wife was born in then by an odd sequence of events we bought it 40 years later. The size of the mortgage isn't worth the grief I sometimes think. Everything is failing. I'd have honestly been better off setting fire to £20 notes. I don't think our kids will thank us if it becomes theirs.

And the moral of the story is don't mark out / cut things when you've had a sherbert! Looked this morning and the slot doesn't look perpendicular to the back wall...which it needs to be! The pencil line running left to right is perpendicular to the back wall. WHOOPS! I have a cunning plan though...

I'd be looking under the floor. Can 'o worms maybe! Looks like that wall has maybe repaired before...

Dry rot occurs where there's damp. Fix any damp sources for a start. A house full of stacked crap for many years will likely have had ventilation problems too.

Managed the rectangular cut out without falling off the steps! Didn't puncture the vcl either! Might leave the 180mm circular cut out until tomorrow.

The heart wants...

I might do the body dryer sober. Seemed quite high when I was up there...

Herding pandas...you'd hate Linux then! I've tried Photobucket, Tinypic, Imgur, Postimage etc. Just think Flickr.....is well, slicker!

Dry rot maybe? Is it peppered with pin holes which could indicate the flight holes of long departed woodworm?

Cheers. I wonder if it's worth me masking taping over the 1.5mm Sharpie line and redoing in pencil?

Deffo foam the join. Also funnel and pipe poured from up higher.

Where to start! NEVER done wall tiling in my life so here goes. Setting a datum: I've taken the datum to be the centre of the big pocket alongside the bath as this will be the focal point: I've set the laser up on a clamped piece of wood. Tbh a pita to keep doing it. Should I set up some sort of permanent platform? The width of the laser line is nom 1.5mm. Is that "good enough"? Think I've made a mistake using a Sharpie to mark the datum? Can't help thinking a sharp pencil would be better? Just about to try and start figuring the pockets in the stud wall so they align exactly with the tiles and everything needs to be bob on. Should I at some stage be pinning a batten to the wall to tile up off of? This batten, what size should it be made of? Should I start tiling with the batten under the first full tile from the floor? Cheers

Nah, I've counterbored with a spade bit to get extra depth. In the brick wall they're fine.

If the damp problem around my boys uni flat window gets any worse he'll have his own shrooms! I might rip out the silicon and redo with some anti mould stuff.

My missus reckons it looks like our kitchen on a bad day!

I use Flickr for my photos and videos. https://www.flickr.com

On thd Aquapanel I used normal Starrett hole saws for the circular bits. I used carbide grit jigsaw blades for the square cut out as recommend by @Nickfromwales: https://www.toolstation.com/shop/Power+Tool+Accessories/d80/Sabre+%26+Jigsaw+Blades/sd2581/Tungsten+Carbide+Grit+Jigsaw+Blades/p67688 No need to countersink the Aquapanel as the screws themselves do it.

I thought you could achieve rather HIGH temperatures with solar thermal?